package com.yf.javathread;

public class Test {

    public static void main(String[] args) {
        Integer a=new Integer(123);
        Integer b=123;
        int c=123;

        System.out.println("a==b : "+ (a==b));
        System.out.println("a==c : "+ (a==c));
        System.out.println("b==c : "+ (b==c));
    }
}
